Maintenance
94
Checking and replacing the air filters
Check the air filters and replace if necessary (see chapter Technical data for the
correct filter types). The inlet (door) filters can be accessed by removing the
fastener(s) at the top of the grating, then lifting the grating and pulling it away from
the door. The outlet (roof) filter in IP54 units can be accessed by pulling the grating
upwards.
Heatsink
Check the cleanliness of the cabinet and the surroundings. When necessary, clean
the interior of the cabinet with a soft brush and a vacuum cleaner.
The module heatsink fins pick up dust from the cooling air. The drive runs into
overtemperature warnings and faults if the heatsink is not clean. When necessary,
contact ABB for cleaning of the heatsink (frame sizes R7 and R8).
In frame size R6, proceed as follows:
1. Remove the cooling fan (see section Fans).
2. Remove the drive module from the cabinet.
3. Blow dry clean compressed air from bottom to top and simultaneously use a
vacuum cleaner at the air outlet to trap the dust. Note: Prevent dust from entering
adjoining equipment.
4. Replace the cooling fan.
Fans
The lifespan of the cooling fan depends on the running time of the fan, ambient
temperature and dust concentration. See the appropriate ACS800 firmware manual
for the actual signal which indicates the running time of the cooling fan.
Replacement fans are available from ABB. Do not use other than ABB specified
spare parts.
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